Hardware User's Guide

Intel® RAID Controller RS25AB080 Hardware User’s Guide 25
Array Performance Features
Table 9. Array Performance Features
Physical and virtual drive support 128 physical drives, 64 virtual drives per
controller
Cache 1 GB DDR3 1333 MHz SDRAM, optional
battery backup
Firmware 16 MB in reflashable flash ROM
Compatible devices • 2.5-inch and 3.5-inch SAS 2.0 or
SATA III
• Non disk devices including expanders
• Can support drives of mixed capacity
Cabling • Small, thin cables that do not restrict
airflow
• Shared connectors for multiple drives
Redundant configuration 128 KB NVRAM and config-on-disk (COD)
Enclosure management • SGPIO
• In-band and out-of-band SES
Enclosure support Assumes one SEP per enclosure
Specification Intel
®
RAID Controller RS25AB080
Specification Intel
®
RAID Controller RS25AB080
Host data transfer rate Up to 8.0 GT/s per PCI Express* lane
Drive data transfer rate Up to 6.0 Gigabit/sec per PHY
Maximum scatter/gather 80 elements
Maximum size of I/O requests 6.4 Mbytes in 64 Kbyte stripes
Maximum queue tags per
drive
As many as the drive can accept
Stripe sizes 8, 16, 32, 64, 128, 256, 512, or 1024 KB
Maximum concurrent
commands
255
Support for multiple initiators Yes
Performance Native command queuing